BUILD MONTH The build month of the Chevelle is coded as a single letter. First production month for the 1972 Chevelle was August of 1971. | Letter | Month | Letter | Month | | *H | August 1971 | J | September 1971 | | K | October 1971 | L | November 1971 | | M | December 1971 | A | January 1972
| | B | February 1972
| C | March 1972
| | D | April 1972
| E | May 1972 | | F | June 1972 | G | July 1972 |
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